Sounds like some other critters may have had about a $5 dinner.... chromis are quite bold tempered and seldom go hiding for more than some shuteye.

We've got 11 of these guys (they look really sharp in a school and help draw others out of hiding as well), but every one makes a prompt appearance when the dinner bell rings, or if one of us happens to walk by they tank and they even think it's time to eat for that matter.